1 #define _CRT_SECURE_NO_WARNINGS 2 #include
     
       3 #include
      
        4 #include
       
         5  6 //定义一个结构体 7 //定义一个数据类型。固定内存大小的别名，还没有分配内存 8 /*struct Teacher 9 {10     char name[5];11     int age;12 };*/13 typedef struct Teacher14 {15     char name[64];16     int age;17     int id;18 }Teacher;19 20 21 struct Student22 {23     char name[64];24     int age;25 }s1,s2;//定义类型 同时定义变量26 27 struct28 {29     char name[64];30     int age;31 32 }s3, s4;    //匿名类型 定义变量33 34 //初始化变量的三种方法35 //定义变量 然后初始化36 //37 Teacher t7 = { "aaaaa", 18, 01 };    //全局38 struct Student239 {40     char name[64];41     int age;42 }s5 = { "names", 21 };43 44 struct45 {46     char name[64];47     int age;48 49 }s6 = { "names", 30 };50 51 52 void copyTeacher01(Teacher *to,Teacher *from)53 {54     *to = *from;55 }56 int main()57 {58     Teacher t1 = { "aaaa", 32, 01 };59     Teacher t2;60     t2 = t1;    //=号操作下 编译器的行为61                 //C编译器提供简单的赋值操作62     Teacher t3;63     printf("t2.name:%s\n",t2.name );64     printf("t2.age:%d\n", t2.age);65     copyTeacher01(&t3, &t1);66     printf("t2.name:%s\n", t3.name);67     printf("t2.age:%d\n", t3.age);68     system("pause");69     return 0;70 }